Van Buren County
There are 8 US Post Offices in Van Buren County serving a total of 7,781 residents equating to 973 residents per post office. It's estimated that approximately 12,419 packages are handled across the 8 county post offices annually. Van Buren County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 7,570. The county seat is Keosauqua, which contains the oldest continuously operational courthouse in the state of Iowa, and second oldest in the United States."